code: def main(command_line_arguments):
      config_logging()
  
      parser = argparse.ArgumentParser(
          description="Safe docker login utility to avoid leaking passwords",
          epilog="",
      )
      parser.add_argument(
          "--secret-name", help="Secret name", type=str, required=True
      )
  
      parser.add_argument(
          "--secret-endpoint-url",
          help="Endpoint Url",
          type=str,
          default=os.environ.get("DOCKERHUB_SECRET_ENDPOINT_URL", None),
      )
  
      parser.add_argument(
          "--secret-endpoint-region",
          help="AWS Region",
          type=str,
          default=os.environ.get(
              "DOCKERHUB_SECRET_ENDPOINT_REGION", None
          ),
      )
  
      args = parser.parse_args(args=command_line_arguments)
  
      if args.secret_endpoint_url is None:
          raise RuntimeError(
              "Could not determine secret-endpoint-url, please specify with --secret-endpoint-url"
          )
  
      if args.secret_endpoint_region is None:
          raise RuntimeError(
              "Could not determine secret-endpoint-region, please specify with --secret-endpoint-region"
          )
  
      try:
          login_dockerhub(
              args.secret_name,
              args.secret_endpoint_url,
              args.secret_endpoint_region,
          )
      except Exception as err:
          logging.exception(err)
          exit(1)
  
file_path: mxnet/ci/docker_login.py
imports: import argparse
  import json
  import logging
  import os
  import subprocess
  import sys
  from util import retry, config_logging
label_desc: Use image node_id 4 for calling a global function with example usage: main(command_line_arguments) without return types